snell



UNITED STATEsf PATENT OFFICE.

ADOLPHUS G. SNELIJ, OF NEW HAVEN, CONN., ASSIGNOR OF ONE-HALF OF HISRIGHT TO GEORGE F. PERKINS, OF HOLYOKE, MASS.

TELEGRAPH-SWITCH.

SPECIFICATION forming per: ef Lettere Patent No. 227,851, dated Ivrey18, 1880. Application filed February 14, 1880.

To all 'whom tt may concern Be it known that I, ADOLPHUS G. SNELL, ofNew Haven, in the county of New Haven and State of Connecticut, haveinvented a new Improvement in Telegraph-Switches; and l do herebydeclare the following, when taken in connection with the accompanyingdrawings and the letters ofret'erence marked thereon, to be a full,clear, and exact description of the same, and which said drawingsconstitute part of this specication, and represent, in-

Figure 1, front View; Fig. 2, sectional top view.

This invention relates to an improvement in switches for connectingdifferent circuit-s or changing the circuit from one connection toanother, commonly called electric switches 5 and it consists .in theconstruction, as hereinafter described, and particularly recited in theclaim. y

A represents the switch-board, to which the various lines are brought inthe usual manner. B is a iiat metal spring in connection with onelinefG, a light spring in connection with a second line. Midway betweenthese springs a lever, D, is hung upon a pivot, a, extending outward inthe form of a handle, E. From one side of the lever an arm, 1), extendstoward the spring I), and on the opposite side a similar arm, d, extendstoward the spring G, but so as not to touch either one or the other. Iheouter surface of the arms is in form ot' a segment, the center of whichis in front of the pivot a, and so that when turned toward eitherspring, as seen in broken lines, Fig. 2, the arm will bear withconsiderable force against the spring. In rear of the pivot a spring-follower, c, is arranged to bear against the square end of the lever,so as to force and hold it to the central or disconnected position, butyet allow the lever to be turned in either direction.

The wires of different lines are brought each to one of the springs ofone `of the switches, and connections are made from vthe bearing of oneswitch to the bearing of the next, so that any one line may be put inconnection with any other line by turning the switches accordingly-thatis to say, supposing the line in connection with the spring C is to beconnected with the line running from the spring C of another switch, thelevers are respectively turned so as to make connection with the springsC and Of, and as the two levers are connected, as by the line j', itfollows that connection is made through the levers between the two linesrunning from the said two sprin gs C Op.

. rIhe levers may be used with a single arm and single spring; butduplicating the arm avoids one-haltl the number ot' levers which wouldbe required in that case.

I claim- An electric switch consisting of the spring in connection withone line, with the pivoted lever D, constructed with an arm extendingtoward said spring, but not in connection with it, arranged to be turnedto bring said arm in connection with said spring, with a spring-followerarranged to engage said lever when in its disconnected position,substantially as described.

ADoLPHUs e. sNELL.

WVitnesses:

J oHN E. EAELE, Jos. C. EARLE.

